Hide salt stdout [ERROR] if grep rc=1

chrony/map.jinja

@@ -14,7 +14,7 @@
 
 -{# Debian distros check /etc/default/rcS to determine UTC setting #}
 -{% if grains['os_family'] == "Debian" %}
--  {% if salt['cmd.run']('grep UTC=no /etc/default/rcS') %}
+-  {% if salt['cmd.run']('grep UTC=no /etc/default/rcS', output_loglevel='quiet') %}
 -    {% do chrony['otherparams'].remove('rtconutc') %}
 -  {% endif %}
 -{% endif %}